157398320 has 20 divisors (see below), whose sum is σ = 365951280. Its totient is φ = 62959296.

The previous prime is 157398313. The next prime is 157398331. The reversal of 157398320 is 23893751.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×157398320² = 49548462277644800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 983660 + ... + 983819.

It is an arithmetic number, because the mean of its divisors is an integer number (18297564).

Almost surely, 2^157398320 is an apocalyptic number.

157398320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157398320 is an abundant number, since it is smaller than the sum of its proper divisors (208552960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157398320 is a wasteful number, since it uses less digits than its factorization.

157398320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967492 (or 1967486 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 157398320 is about 12545.8487158103. The cubic root of 157398320 is about 539.9249095404.

The spelling of 157398320 in words is "one hundred fifty-seven million, three hundred ninety-eight thousand, three hundred twenty".